Weft-replenishing loom



March 15, 1927. 7 ;6 ,2 2

' C. H. DRAPER WEFT REPLENISHING L Filed July 7, 1925 BIWIIWIII" ofthe-tlmeadextendin frjointh'e end of the Q the tip PM Mar. 15,1921.

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WEFT-BEPLENISKING LOOK.

Application med July 7.

The present invention relates to an 'improvement in weft replenishin looms and more particularly in looms o the rotary magazine type known as rotary hopper looms. The hopper as heretofore constructed has sometimes given rise to. the breakage bobbin to the thread-p ate Iby'reason of the windin of the thread on the bobbin tip when t e bobbin was forced into the shuttle by the transferrer hammer.

The object of this invention is to produce a construction of bobbin ti holder which will prevent the winding 0 the thread on the tip of the bobbin when the bobbin is discharged from the hopper and forced into the shuttle, and to this end the present invention consists in the weft replenishing loom hereinafter described and particularly defined in the claims.

In the accompanying drawings illustrating the preferred form'- of the invention, Fig. 1 is a part of a sectional elevation of the hopper of a weft re lenishing loom; Fig. 2 1s a front view of t e small-end disk showing the bobbin holders in position therein; Fi 3 is a plan and Fig. 4 is a rear elevation o the bob in tip holder; and Fig. 5 is a sectional elevation of the same.

The hopper plate 1 carries the hopper which comprises the butt end disk 2 and the small-end. disk 3. Also secured on the ho per is the thread disk 4 over which the en of the yarn from the bobbin is extended to the thread holder 5. The bobbin is supported in the hopper b having its butt inserted in a recess in t e outer face of the butt end disk and by havin its tip received in a ti holder 6 carried Ey the small-end disk. e ti holder is a casting having an inner end 7 ooked over the flange 8 of the small-end disk. This end 7 is inserted through a slot 9 in the small-end disk, and

.the ti the bobbin by the tip holder spring 10 which is received at one end in a spring seat 11 in the small-end disk and at the other end in a spring seat 12 in the tip holder. The outer end of the tilpeholder is provided with a tip socket 13. ading to thetip socket isa tip I oove 14. 1 Beyond the tip' groove older is "provided with a thread groove 15, and on each side of the thread groove are thread directing surfaces 16 and 17. The bobbin 18 is inserted in the hopper directin holder is normally pressed towardv 1825. Serial 110.423".

'the tip' holder to rock on its pivot on the flange 8 away'from the butt end disk so as to permit the bobbin tip to pass the high point 19 of the tip groove 14. As soon as the tip passesbe end the high point the ti holder is presse and holds the bobbin in the tip socket 13. The two thread directing sufaces 16 and 17 operate to guide the thread into the thread the bob in is removed from the .hop er and forced into the shuttle. The thra 20 extending from the bobbin tip to the thread disk is loosely held in the hand as the bobbin is inserted in the hopper and is then drawn out over the edge of the thread disk and wound around the thread holder 5. It extends fromthe thread groove to the thread disk on a diagonal line, as shown in Fig. 3, and the thread directing surface 17 is so formed, as shown, that it causes the thread always to be entered into the thread groove; then when the bobbin is forced out of the hopper the tip moves through thetip groove wit the thread extending, as shown in Fi 3, from the side thereof such that the t read unwinds from the bobbin tip with the transfer movement. The thread surface 16 is a plain curved surface lea' 'ng from the flat portion 21 down into the thread groove, as shown, but the thread directin surface 17 (opposite the otf-set) is provi ed with a diagonal ridge 22 which causes the am to slide down into the thread groove. t will be observed that if the thread is laid up on the thread directing surface 17 in the position indicated in the broken 'line 23, the discharge movement of the bobbin might cause the thread to wind up on the bobbin tip 24 and thereby cause such a shortenin of theyarn between the bobbin tip and t e thread disk as to cause a breakage of the yarn. The resence of the ridge 22 revents the thread mm assuming any suc position as thatindicated a't23, in view of which the thread would wi nd"u ...on.the bobbin as the bobbin is discharge from the hop er. a

It is to be noted t at the thread groove 15 is offset from the center or the ti as shown in. Fig. 3, so that when the ho bin toward the butt end dis tip leaves the tip holder 6 during transfer, the tip moves by the thread lying'in the groove 15, with the result that new thread is supplied from the bobbin, i. e., unwinds from the bobbin during transfer movement. Reference to Fig. 2 shows the groove 15 of a tip-holder fi located a little to one side of the radius extending from the center of the hopper to the corresponding tip socket 13. The position of the thread groove with respect to a radial line extending through the tip socket constitutes a feature of the invention.

The present invention contemplates, in its broader aspects, a construction in which the hopper is provided near the tip position with the peculiar thread groove and thread directing surfaces, irrespective of the particular thing upon which this groove and the -faces on opposite sides of I the thread directing surface opposite the oilthread directing surfaces are formed. What is claimed is: .1. A weft replenishing loom provided with a hopper having bobbin holders including a small-end disk provided with tip holders for receiving the tip of the bobbin, such tip holders having an outer end provided with a tip groove, an off-set thread groove leading to the tip groove and thread directing surthe thread groove,

set being provided with a diagonal thread guiding ridge to guide the thread into the thread groove so as to prevent the thread from winding up on the bobbin tip as itis discharged from the hopper into the shuttle at replenishment.

2. A weft replenishing loom provided with a hopper having bobbin holders including a small-end disk provided with tip holders for receiving the tip of the bobbin, the holders being provided adjacent to the tip position with an'otf-set thread groove leading to the tip position, and thread directing surfaces on opposite sides of the thread groove, the thread directing surface opposite the oif-set being provided With a diagonal thread guiding ridge to guide the thread into the thread groove so as to prevent-the thread from winding up on the bobbintip as ,it is discharged from the hopper into the shuttle at replenishment.

3. A weft replenishing loom provided with a hopper having means for holding bobbins, such hopper being provided with an off-set thread groove leading to the tip position, and thread directing surfaces on opposite sides of the thread groove, the thread directing surfaceopposite the off-set being. provided with a diagonal thread guiding ridge to guide the thread into the thread so as to prevent the thread from windln up on the bobbin tip-as it is discharged rom the hopper into the shuttle at replenishment.

In testimony whereof I have signed my name to this specification.

CLARE H. DRAPER.

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